One third of patients had ≥1 episode of desaturation. Desaturation was more common in patients younger versus older than 24 months (59% vs. 10%). The median duration of attempts was 35 seconds; 13 attempts (6%) lasted longer than 90 seconds. The probability of successful endotracheal tube placement decreased with longer attempt duration; success rates for 30-, 45-, 60-, and 75-second attempts were 46%, 42%, 36%, and 25%, respectively. The odds of desaturation for individual attempts lasting longer than 30 and 90 seconds were 2 and 8, respectively, compared with a reference of 1 second. Although desaturation was associated with the duration of both total cumulative and individual attempts, it was not associated with number of attempts.

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<strong>Comment:</strong>
Because saturations will drop precipitously in children, particularly the very young, providers should immediately commence bagging at the first sign of any decrease in oxygen saturations.